Radiography

Question 1

What are 4 legislations for radiography

Answer 1

• IRR (IONSING RADIATION REGULATION) 17
• IR(ME)R 17 IONSING RADIATION (MEDICAL EXPOSURE) REGULATIONS 17
• ALARP - AS LOW AS REASONABLY PRACTICABLY
• REPPIR- The Radiation (Emergency Preparedness and Public Information)
Regulations 2001

Question 2

Local rules
which are displayed next to x-ray machine in dental surgery - DENTAL RADIATION LEGISLATIONS -

Answer 2

arrangements for pregnant staff
• name of radiation protection supervisor
• identification and description of controlled area
What to do in the event of malfunction

Question 3

Radiation protection supervisor duties-

Answer 3

carry out risk assessments regarding restricting radiation exposure (risk assessment of x-ray area.
• ensure all staff are trained to their level of legal responsibility (staff training).
• ensure local rules are up to date, and to update when necessary.
• maintain contents of “radiation protection file”.

Question 4

Bite wings - what do u see?

Answer 4

Posterior teeth in occlusion
Crown of posterior teeth in occlusion
Cannot see the apex

Question 5

Bite wings- why do we take them

Answer 5

Bone loss
Diagnosing caries
Check under old restorations

Question 6

Periapical- what do we see?

Answer 6

Focused on 1 or 2 teeth
Can see crown to apex and surrounding bone

Question 7

Periapical- why do we use them

Answer 7

Before and after RCT
Before and after extraction
Abscesses

Question 8

Occlusal- what do we see?

Answer 8

Maxillary or mandible view

Question 9

Occlusal- why do we take them

Answer 9

Impacted canines
Fractures
Cysts
Saliva gland blockage

Question 10

OPG -what do we see

Answer 10

Full dentition and mandible

Question 11

OPG- why do we take them

Answer 11

Orthodontic
Trauma
Before surgery

Question 12

Ceph- what do we see

Answer 12

Lateral view of skull,mandible and neck

Question 13

Ceph- why do we take them?

Answer 13

Pre jaw surgery
Identify trauma

Question 14

Lateral oblique radiograph- what do we see?

Answer 14

Lateral view of mandible

Question 15

Lateral oblique radiograph- why do we take them

Answer 15

Jaw pathology
Orthodontic assessment

Question 16

What is quality assurance

Answer 16

Process to make sure standards are met and prevent quality failure

Question 17

Grading system (old)

Answer 17

Grade 1- perfect
Grade 2-some faults
Grade 3-unusable

Question 18

Grading system (new)

Answer 18

A- acceptable
N- not acceptable

Question 19

When is dosimeter worn

Answer 19

50 extra oral and 100 intra oral a week

Question 20

Audit cycle

Answer 20

Perform audit
Compare results
Reaudit

Question 21

What does ALARP mean

Answer 21

As low as reasonably practicable

Question 22

4 hazards for radiography

Answer 22

Hair loss
Skin burns
Cell changes
Tissue damage

Question 23

What do these signs mean yellow and orange

Answer 23

Yellow- radiograph warning label
Orange- oxidising agent

Question 24

Green/brown tint to xray

Answer 24

Fixer not washed properly

Question 25

Static marks

Answer 25

Mishandled- removed from packet too early

Question 26

Scratches

Answer 26

Not stored or handled properly

Question 27

Too dark

Answer 27

Overdeveloped

Question 28

Lead foil printed on film

Answer 28

Exposed with film packet in the wrong way

Question 29

Blurred image

Answer 29

Moved during exposure

Question 30

Coned image

Answer 30

Incorrect positioning of the tube head

Question 31

Too pale

Answer 31

Underdeveloped, too cold or not left in developer long enough

Question 32

Foggy image

Answer 32

Exposed to light